Gas/particle flow characteristics of two swirl burners

被引：45
作者：
Chen, Zhichao [1 ,2 ]
Li, Zhengqi [1 ]
Jing, Jianping [1 ]
Chen, Lizhe [1 ]
Wu, Shaohua [1 ]
Yao, Yang [2 ]
机构：
[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Postdoctoral Stn Civil Engn, Harbin 150090, Peoples R China
来源：
ENERGY CONVERSION AND MANAGEMENT | 2009年 / 50卷 / 05期
关键词：
Burner; Gas/particle flow; Coal combustion; Three-dimensional PDA; PULVERIZED COAL COMBUSTION; SPHERICAL-PARTICLES; OXIDE FORMATION; NOX FORMATION; AIR-FLOW; FUEL; BURNOUT; REDUCTION; SYSTEM; FLAMES;
D O I：
10.1016/j.enconman.2009.01.027
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A three-component particle-dynamics anemometer is used to measure, in the near-burner region, the characteristics of gas/particle two-phase flows with a centrally fuel rich swirl coal combustion burner and enhanced ignition-dual register burner, on a gas/particle two-phase test facility. Velocities, RMS velocities, particle mean diameters and particle volume flux profiles were obtained. For the centrally fuel rich burner, particles penetrate the central recirculation zone partially, and are then deflected radially. For the enhanced ignition-dual register burner, particles completely penetrate the central recirculation zone. Compared with the enhanced ignition-dual register burner, in the same cross-section, the particle volume flux peak value for the centrally fuel rich burner is much closer to the chamber axis and much larger near the chamber axis. In six cross-sections from x/d = 0.3 to 2.5, the particle volume flux in the central recirculation zone for the centrally fuel rich burner is much larger than that for the enhanced ignition-dual register burner. For the centrally fuel rich burner, most of bigger particles are resident in the region near the chamber axis and the residence time is prolonged. The influence of gas/particle flow characteristics on combustion has been analyzed. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1180 / 1191
页数：12
相关论文
共 38 条
[1]   NOX FORMATION AND REDUCTION-MECHANISMS IN PULVERIZED COAL FLAMES [J].
ABBAS, T ;
COSTA, M ;
COSTEN, P ;
GODOY, S ;
LOCKWOOD, FC ;
OU, JJ ;
ROMOMILLARES, C ;
ZHOU, J .
FUEL, 1994, 73 (09) :1423-1436
[2]   Particle concentration and local mass flux measurements in two-phase flows with PDA.: Application to a study on the dispersion of spherical particles in a turbulent air jet [J].
Aísa, L ;
Garcia, JA ;
Cerecedo, LM ;
Palacín, IG ;
Calvo, E .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2002, 28 (02) :301-324
[3]   EFFECT OF COAL MOISTURE ON BURNOUT AND NITROGEN-OXIDE FORMATION [J].
ASAY, BW ;
SMOOT, LD ;
HEDMAN, PO .
COMBUSTION SCIENCE AND TECHNOLOGY, 1983, 35 (1-4) :15-31
[4]   MEASUREMENT OF PARTICLE FLOW PROPERTIES IN A SUSPENSION BY A LASER SYSTEM [J].
BAO, J ;
SOO, SL .
POWDER TECHNOLOGY, 1995, 85 (03) :261-268
[5]  
CHEN ZC, 2008, INT J CHEM REACTOR E, V6
[6]   The influence of fuel bias in the primary air duct on the gas/particle flow characteristics near the swirl burner region [J].
Chen, Zhichao ;
Li, Zhengqi ;
Jing, Jianping ;
Wang, Fuqiang ;
Chen, Lizhe ;
Wu, Shaohua .
FUEL PROCESSING TECHNOLOGY, 2008, 89 (10) :958-965
[7]   Gas/particle flow characteristics of a centrally fuel rich swirl coal combustion burner [J].
Chen, Zhichao ;
Li, Zhengqi ;
Wang, Fuqiang ;
Jing, Jianping ;
Chen, Lizhe ;
Wu, Shaohua .
FUEL, 2008, 87 (10-11) :2102-2110
[8]   Experimental study of solid-liquid two-phase flow in a hydrocyclone [J].
Dai, GQ ;
Chen, WM ;
Li, JM ;
Chu, LY .
CHEMICAL ENGINEERING JOURNAL, 1999, 74 (03) :211-216
[9]   MEASUREMENTS OF CHAR BURNOUT IN A LARGE-SCALE LABORATORY COMBUSTOR [J].
GODOY, S ;
HASSAN, MA ;
ISMAIL, MA ;
LOCKWOOD, FC .
COMBUSTION SCIENCE AND TECHNOLOGY, 1991, 80 (1-3) :137-150
[10]  
GODOY S, 1986, J I ENERGY, V59, P38
1234